Premium
WP Affilate Pro
Allows you to manage your affiliate links from within your WordPress dashboard. Also allows you to mask links and a number of other features.
Premium
Ninja Affiliate
For affiliate bloggers who want to Automatically Convert Keywords on their Blogs Into Money-Making Affiliate Links.
Clickbank Widget
Clickbank Widget is a free and easy to use Wordpress plugin that can add targeted ads for Clickbank products to your sidebar to help you monetize your weblog.
WordPress Affiliate Store Plugin (beta v.5)
Add products to your WP blog from any of the major affiliate networks.
Hidden Affiliate Links WP Plugin
Define Affiliate redirects from a AJAX web interface inside your wordpress admin.
Pretty Link
Shrink, track and share any URL on the Internet from your WordPress website. You can now shorten links using your own domain name.
Keral Patel Amazon Wordpress Plugin
Amazon shop plugin that allows a blogger to add products with amazon associate ID embedded in it and earn revenue by showing amazon products right into the blog posts.
Amazon Autoposter
Amazon Autoposter is a powerful and easy to use plugin for Wordpress weblogs that allows users to post products from Amazon on their blog automatically and earn money using Amazons affiliate program.
aLinks
Tag your key phrase and embedded your ClickBank, eBay, Amazon, CJ, Linkshare. Turns commonly use phrases into links to Amazon, eBay, Clickbank and more.
CafePress
Sell your own CafePress merchandise or their affiliate products.
Datafeedr
Powerful Affiliate Stores using WP, wide range of affiliate networks
Pulls in Affiliate Datafeeds and publishes to your blog